49853781149 has 2 divisors, whose sum is σ = 49853781150. Its totient is φ = 49853781148.

The previous prime is 49853781139. The next prime is 49853781209. The reversal of 49853781149 is 94118735894.

49853781149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26193804025 + 23659977124 = 161845^2 + 153818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49853781149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49853781139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24926890574 + 24926890575.

It is an arithmetic number, because the mean of its divisors is an integer number (24926890575).

Almost surely, 2^49853781149 is an apocalyptic number.

It is an amenable number.

49853781149 is a deficient number, since it is larger than the sum of its proper divisors (1).

49853781149 is an equidigital number, since it uses as much as digits as its factorization.

49853781149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 59.

The spelling of 49853781149 in words is "forty-nine billion, eight hundred fifty-three million, seven hundred eighty-one thousand, one hundred forty-nine".